Torch-light tip for natural gas.



A. 0. RUTZ.

TORCH LIGHT TIP FOR NATURAL GAS APPLICATION FILED APR.15 1915.

Patented Nov. 16, 1915.

ARNOLD O. RUTZ, 0F MILWAUKEE, WISCONSIN.

TORCH-LIGHT TIP FOR NATURAL GAS.

Specification of Letters Patent.

Patented Nov. 116, 1915.

Application filed April 15, 1915. Serial No. 21,487.

Light Tips for Natural Gas; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention refers to' burner tips to be utilized in conection with gas lighter-flash torches of the type as described in the patent issued to me June 23, 1914, No. 1101146,

for flash ignite'r, the said tip being especially applicableto natural gas, wherein the pressure is materially increased over that of the pressure .usually found in manufactured gas. Practice has demonstrated that where natu ral gas is utilized as a fuel, a flash torch having a head of the ordinary construction now in use will, in a lighting operation, due to the strong gas pressure, snuff'out as the jet flames are discharged. This result attains for the reason that the pressure of the gas discharging from the burner head in juxtaposition to a constantly burning pilotlight, when flashed, will create a disturbance, whereby this small light is blown out and although the initial lighting operation may be effected, the reduced gas supply to the torch will thereafter escape and defeat further functions of the flash torch. It isunderstood that, in connection with flash torches'of the character mentioned above, a valve is employed, whereby a small quantity of gas is supplied at all times to maintain a constant burning torch and this supply is augmented by a full volume of gas in a firing operation.

In order to overcome the above objectionable features, my invention essentially embodies a tip having a chamber provided with radial firing ports adj acent'to its top wall. The top-wall of the chamber has projecting therefrom a nipple which is provided with one or more torch apertures, which apertures are intersected by a restricted feed duct that communicates with the top of the chamber. By this construction wherein the feed duct is restricted with relation to the firing ports and torch apertures, any tendency of the high pressure gas to snuff out the firing jets will be eliminated due to the fact that said restricted feed duct will choke the supply of gas to the torch, causing it to flow thereto in a tardy volume, whereby even though the torch firing jets are extinguished as they are emitng groups ted from the tip, the heavy blowing pressure dlscharging from said firing ports will not be transmitted to the constantly burning pllot thereabove. Thus the pilot-light is held intact by the gentle supply of natural gas, whereby the heavy charges of gas from the firing ports will be ignited at all times bythe juxtaposed torch, there being a comm ngling of the lazy flow of gas from the torch apertures to the strong flow from the firlng. ports.

With the above objects in View the inventron therefore consists in certain peculiarities of construction and combination" of parts as set forth hereinafter with reference to.

the accompanying drawings and subsequently claimed.

In the drawings Figure 1 represents a magnified sectional elevation of a torch-tip embodying the features of my invention, and Figs. 2 and 8, sectional plan views of the same, the sections being indicated by lines 2-2 and 33 respectively, of Fig. 1.

Referring by characters to the drawings,

A represents the tip formed with a chamber 1, the mouth 1 of which is expanded and provided with threads adapted to receive a the corresponding threaded end of a supply pipe, not shown. The chamber is preferably cylindrical in form and its topiwall 1 is slightly crowned. At the intersecting point of the crowned top 1" and the cylindrical side walls of the chamber, a series of radial firing ports 2 are arranged, which ports may be inclined horizontally or slightlyoblique as occasion may require. The top-wall 1" of the chamber has projecting therefrom a nipple 3, which nipple is .provided with. a series of radial torch apertures 4 that are approximately parallel to and alined with the firing ports. These torch apertures are intersected by a restrictedfeed duct 5, which feed-duct extends throughthe top "wall of the chamber and communicates therewith, being preferably centrally disposed with relation to the chamber. The firing ports are of sufficient cross-sectional area to provide a choke, whereby the jet flames are discharged to the required distance for ignitof burners within their'field of operation and the torch apertures are preferably of slightly less cross-sectional area than the firing ports, while the restricted feed duct 5 is of considerably less cross-sectional area than said firing ports and torch apertures. By this arrangement, when a small quantity the major portion o'fsaid supply will travel through the restricted feed duct 5, whereby the torch flame is maintained, it being understood, of course, that any slight leakage through the firing ports 2 will rise and be consumed by the pilot.

When the full supply of gas under high pressure is admitted to the tip for a burner igniting operation, it is apparent that a high pressure of gas will accumulate in the top of the dome immediately and be discharged through the firing ports under pressure, being ignited by a jump-spark connection from the juxtaposed pilot-light. This auxiliary pressure, however, will not be manifest in the pilot-1i ght supply of gas due to the fact that-the restricted feed duct will choke back a supply from the chamber, whereby a tardy flow of gas only will be discharged from the torch apertures 4. Hence it will be seen that even though the igniter' flames which flash from the tip may be extinguished due to the momentum of their discharge, the pilotlight will not be aflected and will, under all conditions, provide a flame s'ufiicient'to reignite the main flow of gas from the chamber. The crowned wall 1 ofthe chamber also serves to collect aslight pocket of gas versely disposed torch apertures, and a feed duct in, communication with the chambered top and said torch apertures, the feed duct being of lesser cross-sectional area than the firing ports and torch apertures.

2. A chambered tip for flash igniters having radial firing ports at the top of the versely disposed torch apertures, and a feed duct in communication with the chambered top and said torch'apertures, the torch apertures being of less cross-sectional area than the firing ports and the feed-duct being of less cross-sectional area than the aforesaid torch apertures,

3. A chambered tip for flash igniters having a crowned top wall and provided with radial firing ports at the point of intersection between the crown Wall and side walls of said chamber, and anipple projecting from the chambered top having one or more transversely disposed torch apertures, and'a feed duct in communication with the chambered top and said torch apertures, the feed duct being centrally disposed with relation to the crowned. chambered top and of lesser cross-sectional area than the firing ports and torch feed apertures.

4. A cylindrical chambered tip for flash igniters provided with a crowned top wall and a flaring mouth, the said chamber having radial firing ports at the point-of intersection between the crown wall and 7 side walls of said chamber, and a nipple project- ARNOLD o, RUTZ.

Witness es: 4 5

Gno. W. YANCEY,

ll/L E. DOWNEY. 

